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Managing Network Traffic

A Network Setup can have various structures. This section describes the most usual network setups and generalized approaches followed within an Organization.
This guide highlights an introduction to proxy servers followed by the varied network structures that are setup within different organizations.
AEM Screens Network Requirements The AEM Screens communicates directly with the AEM as a Cloud Service, therefore it is required to establish a stable connection between the two nodes. Firewalls are absolutely mandatory for commercial Internet access and as a customer you must understand which communication ports are required to be opened in these firewalls and other IT-Security related network components.

Overview to Proxy Servers

An Internet connection relies on the usage of a Proxy Server. A Proxy Server is a dedicated computer or a software system running on a computer that acts as an intermediary between an endpoint device, such as a computer, and another server from which a user or client is requesting a service. The proxy server can exist in the same machine as a firewall server or it can exist on a separate server, which forwards requests through the firewall.
An advantage of a proxy server is that its cache can serve all users. If one or more Internet sites are frequently requested, these are likely to be in the proxy's cache, and this further improves user response time. A proxy can also log its interactions, which can be used for troubleshooting.
When a proxy server receives a request for an Internet resource (such as a Web page or while connecting to an AEM Publisher), it scans its local cache of previously called urls. If it finds the page, it returns it to the user without forwarding the request to the Internet. If the page is not in the cache, the proxy server (acts as a client) on behalf of the user and requests the page from the server in the Internet. When the content is returned, the proxy server relates it to the original request and forwards it to the user.

Understanding the Standard Network Setups

To implement a network Setup, you must refer to the following scenarios with their strengths and deployment details.
This Guide highlights four different kinds of Network Setups within an Organization:
The following table outlines the different types of network setups with advantages and disadvantages:
Network Setup
Advantages
Disadvantages
Direct Internet Network (Wired/Wireless)
Easy and straight forward to SetUp
Good choice for mid-size or larger Installations
Dedicated Network can be Encapsulated
Few Points of failure
Relatively Inexpensive
Good Scalability
Mandatory Internet Data Plan
Direct Mobile Network
Easy to SetUp
Good Choice for Mid-size or Larger Installations
Good Scalability
Encapsulated Screens
Mandatory Internet connection
Mobile Network with Mobile Data Router and Active Network Components
Easy to SetUp
Good Choice for Mid-size or Larger Installations
Dedicated Network can be Encapsulated
Few Points of Failure
Relatively Inexpensive
Good scalability
Mandatory Internet Data Plan
Enclosed Corporate Network (Wired/Wireless)
High flexibility and scalability
Highly Secure due to Different Lines of Defense
Encapsulated Networks
Easy to Monitor and Maintain
Reliable
Complicated and Expensive
Recommended for Network Specialists or System Integrators